and the edges of these were frilled and scalloped; and here again my vision failed and demanded still stronger binoculars. Here was indeed complexity: a butterfly, one of those black beauties, splashed with jasper and beryl, hovering nearby, with taste only for liquid nectar, yet choosing a little weed devoid of flower or fruit on which to deposit her quota of eggs. She neither turned to look at their beauties nor trusted another batch to this plant. Somehow, someway, her caterpillar wormhood had carried, through the mummified chrysalid and the reincarnation of her present form, knowledge of an earlier, infinitely coarser diet.

Together with the pure artistic joy which was stirred at the sight of these tiny ornate globes, there was aroused a realization of complexity, of helpless, ignorant achievement; the butterfly blindly pausing in her flower-to-flower fluttering—a pause as momentous to her race as that of the slow daily and monthly progress of the weed's struggle to fruition.

I took a final glance at the eggs before returning to my own larger world, and I detected a new complication, one which left me with feelings too involved for calm scientific contemplation. As if a Martian should suddenly become visible to an astronomer, I found that one of the egg planets was inhabited. Perched upon the summit—quite near the north pole—was an insect, a wasp, much smaller than the egg itself. And as I looked, I saw it at the climax of its diminutive life; for it reared up, resting on the tips of two legs and the iridescent wings, and sunk its ovipositor deep into the crystalline surface. As I watched, an egg was deposited, about the latitude of New York, and with a tremor the tiny wasp withdrew its instrument and rested.

On the same leaf were casually blown specks of dust, larger than the quartette of eggs. To the plant the cluster weighed nothing, meant nothing more than the dust. Yet a moment before they contained the latent power of great harm to the future growth of the weed—four lusty caterpillars would work from leaf to leaf with a rapidity and destructiveness which might, even at the last, have sapped the maturing seeds. Now, on a smaller scale, but still within the realm of insect life, all was changed—the plant was safe once more and no caterpillars would emerge. For the wasp went from sphere to sphere and inoculated every one with the promise of its kind. The plant bent slightly in a breath of wind, and knew nothing; the butterfly was far away to my left, deep-drinking in a cluster of yellow cassia; the wasp had already forgotten its achievement, and I alone—an outsider, an interloper—observed, correlated, realized, appreciated, and—at the last—remained as completely ignorant as the actors themselves of the real driving force, of the certain beginning, of the inevitable end. Only a momentary cross-section was vouchsafed, and a wonder and a desire to know fanned a little hotter.

I had far from finished with my weed: for besides the cuts and tears and disfigurements of the leaves, I saw a score or more of curious berry-like or acorn-like growths, springing from both leaf and stem. I knew, of course, that they were insect-galls, but never before had they meant quite so much, or fitted in so well as a significant phenomenon in the nexus of entangling relationships between the weed and its environment. This visitor, also a minute wasp of sorts, neither bit nor cut the leaves, but quietly slipped a tiny egg here and there into the leaf-tissue.

And this was only the beginning of complexity. For with the quickening of the larva came a reaction on the part of the plant, which, in defense, set up a greatly accelerated growth about the young insect. This might have taken the form of some distorted or deformed plant organ—a cluster of leaves, a fruit or berry or tuft of hairs, wholly unlike the characters of the plant itself. My weed was studded with what might well have been normal seed-fruits, were they not proved nightmares of berries, awful pseudo-fruits sprouting from horridly impossible places. And this excess of energy, expressed in tumorous outgrowths, was all vitally useful to the grub—just as the skilful jiu-jitsu wrestler accomplishes his purpose with the aid of his opponent's strength. The insect and plant were, however, far more intricately related than any two human competitors: for the grub in turn required the continued health and strength of the plant for its existence; and when I plucked a leaf, I knew I had doomed all the hidden insects living within its substance.

The galls at my hand simulated little acorns, dull greenish in color, matching the leaf-surface on which they rested, and rising in a sharp point. I cut one through and, when wearied and fretted with the responsibilities of independent existence, I know I shall often recall and envy my grub in his palatial parasitic home. Outside came a rather hard, brown protective sheath; then the main body of the gall, of firm and dense tissue; and finally, at the heart, like the Queen's chamber in Cheops, the irregular little dwelling-place of the grub. This was not empty and barren; but the blackness and silence of this vegetable chamber, this architecture fashioned by the strangest of builders for the most remarkable of tenants, was filled with a nap of long, crystalline hairs or threads like the spun-glass candy in our Christmas sweetshops—white at the base and shading from pale salmon to the deepest of pinks. This exquisite tapestry, whose beauties were normally forever hidden as well from the blind grub as from the outside world, was the ambrosia all unwittingly provided by the antagonism of the plant; the nutrition of resentment, the food of defiance; and day by day the grub gradually ate his way from one end to the other of his suite, laying a normal, healthful physical foundation for his future aerial activities.

The natural history of galls is full of romance and strange unrealities, but to-day it meant to me only a renewed instance of an opportunity seized and made the most of; the success of the indirect, the unreasonable—the long chance which so few of us humans are willing to take, although the reward is a perpetual enthusiasm for the happening of the moment, and the honest gambler's joy for the future. How much more desirable to acquire merit as a footless grub in the heart of a home, erected and precariously nourished by a worthy opponent, with a future of unnumbered possibilities, than to be a queen-mother in nest or hive—cared-for, fed, and cleansed by a host of slaves, but with less prospect of change or of adventure than an average toadstool.

Thus I sat for a long time, lulled by similitudes of northern plants and bees and birds, and then gently shifted southward a few hundred miles, the transition being smooth and unabrupt. With equal gentleness the dead calm stirred slightly and exhaled the merest ghost of a breeze; it seemed as if the air was hardly in motion, but only restless: the wings of the bees and the flycatcher might well have caused it. But, judged by the sequence of events, it was the almost imperceptible signal given by some great Jungle Spirit, who had tired of playing with my dreams and pleasant fancies of northern life, and now called upon her legions to disillusion me. And the response was immediate. Three great shells burst at my very feet,—one of sound, one of color, and the third of both plus numbers,—and from that time on, tropical life was dominant whichever way I looked. That is the way with the wilderness, and especially the tropical wilderness—to surprise one in the very field with which one is most familiar. While in my own estimation my chief profession is ignorance, yet I sign